Company · CIK 1659617

# Moleculin Biotech, Inc.

| CIK | [1659617](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001659617) (SEC EDGAR) |
| --- | --- |
| Industry (SIC) | 2834 — Pharmaceutical Preparations |
| Incorporated in | DE |
| Business address | TX |
| Listed | MBRX (Nasdaq) |
| First annual or quarterly report | 2016-06-16 |

## Offerings

 19 registrations

| Registration | Label and status | First filed | Last event | Filings |
| --- | --- | --- | --- | --- |
| 333-280064 | Shelf Effective | 2024-06-07 | 2026-08-21 | 6 |
| 333-297776 | Registered company Effective | 2026-07-29 | 2026-08-03 | 5 |
| 333-294686 | Shelf Effective | 2026-03-27 | 2026-04-14 | 2 |
| 333-292420 | Shelf Effective | 2025-12-23 | 2026-01-06 | 2 |
| 333-290418 | Shelf Effective | 2025-09-19 | 2025-09-30 | 2 |
| 333-287727 | Registered company Final prospectus | 2025-06-02 | 2025-06-23 | 6 |
| 333-286276 | Registered company Effective | 2025-03-31 | 2025-04-07 | 2 |
| 333-283820 | Registered company Withdrawn | 2024-12-13 | 2025-02-24 | 5 |
| 333-276851 | Registered company Effective | 2024-02-02 | 2024-12-09 | 3 |
| 333-280951 | Registered company Final prospectus | 2024-07-22 | 2024-08-16 | 6 |
| 333-256627 | Shelf Effective | 2021-05-28 | 2023-12-22 | 5 |
| 333-235686 | Shelf Effective | 2019-12-23 | 2021-02-04 | 8 |
| 333-219434 | Shelf Effective | 2017-07-24 | 2020-02-06 | 11 |
| 333-235965 | Shelf Withdrawn | 2020-01-17 | 2020-01-21 | 2 |
| 333-227845 | Registered company Effective | 2018-10-15 | 2018-10-26 | 3 |
| 333-226146 | Registered company Effective | 2018-07-12 | 2018-07-23 | 2 |
| 333-224243 | Registered company Effective | 2018-04-11 | 2018-05-24 | 3 |
| 333-214898 | Registered company Final prospectus | 2016-12-02 | 2017-10-23 | 7 |
| 333-209323 | IPO Final prospectus | 2016-02-01 | 2016-05-03 | 7 |

## Filings

 90

| Filed | Filing | Registration | Accession |
| --- | --- | --- | --- |
| 2026-08-21 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774926028751/0001437749-26-028751-index.htm) Shelf takedown | 333-280064 | 0001437749-26-028751 |
| 2026-08-03 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774926025335/0001437749-26-025335-index.htm) Shelf takedown | 333-297776 | 0001437749-26-025335 |
| 2026-07-31 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999526002515/9999999995-26-002515-index.htm) Declared effective | 333-297776 | 9999999995-26-002515 |
| 2026-07-31 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774926025130/0001437749-26-025130-index.htm) Amendment | 333-297776 | 0001437749-26-025130 |
| 2026-07-30 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774926025100/0001437749-26-025100-index.htm) Amendment | 333-297776 | 0001437749-26-025100 |
| 2026-07-29 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000143774926024774/0001437749-26-024774-index.htm) Registration filed | 333-297776 | 0001437749-26-024774 |
| 2026-07-15 | [DRS](https://www.sec.gov/Archives/edgar/data/1659617/000143774926023641/0001437749-26-023641-index.htm) Draft made public | 377-09576 | 0001437749-26-023641 |
| 2026-04-14 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999526001181/9999999995-26-001181-index.htm) Declared effective | 333-294686 | 9999999995-26-001181 |
| 2026-03-27 | [S-3](https://www.sec.gov/Archives/edgar/data/1659617/000143774926010079/0001437749-26-010079-index.htm) Shelf registered | 333-294686 | 0001437749-26-010079 |
| 2026-01-06 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999526000083/9999999995-26-000083-index.htm) Declared effective | 333-292420 | 9999999995-26-000083 |
| 2025-12-23 | [S-3](https://www.sec.gov/Archives/edgar/data/1659617/000143774925038703/0001437749-25-038703-index.htm) Shelf registered | 333-292420 | 0001437749-25-038703 |
| 2025-12-23 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774925038686/0001437749-25-038686-index.htm) Shelf takedown | 333-280064 | 0001437749-25-038686 |
| 2025-09-30 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999525003242/9999999995-25-003242-index.htm) Declared effective | 333-290418 | 9999999995-25-003242 |
| 2025-09-19 | [S-3](https://www.sec.gov/Archives/edgar/data/1659617/000143774925029526/0001437749-25-029526-index.htm) Shelf registered | 333-290418 | 0001437749-25-029526 |
| 2025-07-11 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774925022604/0001437749-25-022604-index.htm) Shelf takedown | 333-280064 | 0001437749-25-022604 |
| 2025-06-23 | [424B4](https://www.sec.gov/Archives/edgar/data/1659617/000143774925020979/0001437749-25-020979-index.htm) Final prospectus | 333-287727 | 0001437749-25-020979 |
| 2025-06-20 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999525001975/9999999995-25-001975-index.htm) Declared effective | 333-287727 | 9999999995-25-001975 |
| 2025-06-16 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774925020492/0001437749-25-020492-index.htm) Amendment | 333-287727 | 0001437749-25-020492 |
| 2025-06-11 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774925020105/0001437749-25-020105-index.htm) Amendment | 333-287727 | 0001437749-25-020105 |
| 2025-06-06 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774925019622/0001437749-25-019622-index.htm) Amendment | 333-287727 | 0001437749-25-019622 |
| 2025-06-02 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000143774925019188/0001437749-25-019188-index.htm) Registration filed | 333-287727 | 0001437749-25-019188 |
| 2025-05-23 | [DRS](https://www.sec.gov/Archives/edgar/data/1659617/000143774925018355/0001437749-25-018355-index.htm) Draft made public | 377-08038 | 0001437749-25-018355 |
| 2025-04-07 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999525001012/9999999995-25-001012-index.htm) Declared effective | 333-286276 | 9999999995-25-001012 |
| 2025-03-31 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000143774925010255/0001437749-25-010255-index.htm) Registration filed | 333-286276 | 0001437749-25-010255 |
| 2025-02-26 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774925005173/0001437749-25-005173-index.htm) Shelf takedown | 333-280064 | 0001437749-25-005173 |
| 2025-02-24 | [RW](https://www.sec.gov/Archives/edgar/data/1659617/000143774925004911/0001437749-25-004911-index.htm) Withdrawn | 333-283820 | 0001437749-25-004911 |
| 2025-02-11 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774925003357/0001437749-25-003357-index.htm) Amendment | 333-283820 | 0001437749-25-003357 |
| 2025-02-10 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774925003210/0001437749-25-003210-index.htm) Amendment | 333-283820 | 0001437749-25-003210 |
| 2025-01-29 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774925002083/0001437749-25-002083-index.htm) Amendment | 333-283820 | 0001437749-25-002083 |
| 2024-12-13 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000143774924037491/0001437749-24-037491-index.htm) Registration filed | 333-283820 | 0001437749-24-037491 |
| 2024-12-09 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999524003706/9999999995-24-003706-index.htm) Declared effective | 333-276851 | 9999999995-24-003706 |
| 2024-08-16 | [424B4](https://www.sec.gov/Archives/edgar/data/1659617/000143774924027102/0001437749-24-027102-index.htm) Final prospectus | 333-280951 | 0001437749-24-027102 |
| 2024-08-15 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999524002543/9999999995-24-002543-index.htm) Declared effective | 333-280951 | 9999999995-24-002543 |
| 2024-08-15 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774924026964/0001437749-24-026964-index.htm) Amendment | 333-280951 | 0001437749-24-026964 |
| 2024-08-15 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774924026932/0001437749-24-026932-index.htm) Amendment | 333-280951 | 0001437749-24-026932 |
| 2024-07-30 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000143774924023822/0001437749-24-023822-index.htm) Amendment | 333-280951 | 0001437749-24-023822 |
| 2024-07-22 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000143774924023213/0001437749-24-023213-index.htm) Registration filed | 333-280951 | 0001437749-24-023213 |
| 2024-07-01 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999524002038/9999999995-24-002038-index.htm) Declared effective | 333-280064 | 9999999995-24-002038 |
| 2024-06-07 | [S-3](https://www.sec.gov/Archives/edgar/data/1659617/000143774924019698/0001437749-24-019698-index.htm) Shelf registered | 333-280064 | 0001437749-24-019698 |
| 2024-02-12 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999524000398/9999999995-24-000398-index.htm) Declared effective | 333-276851 | 9999999995-24-000398 |
| 2024-02-02 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000143774924002977/0001437749-24-002977-index.htm) Registration filed | 333-276851 | 0001437749-24-002977 |
| 2023-12-22 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774923035262/0001437749-23-035262-index.htm) Shelf takedown | 333-256627 | 0001437749-23-035262 |
| 2021-06-25 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774921015714/0001437749-21-015714-index.htm) Shelf takedown | 333-256627 | 0001437749-21-015714 |
| 2021-06-25 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774921015712/0001437749-21-015712-index.htm) Shelf takedown | 333-256627 | 0001437749-21-015712 |
| 2021-06-11 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999521002311/9999999995-21-002311-index.htm) Declared effective | 333-256627 | 9999999995-21-002311 |
| 2021-05-28 | [S-3](https://www.sec.gov/Archives/edgar/data/1659617/000143774921013735/0001437749-21-013735-index.htm) Shelf registered | 333-256627 | 0001437749-21-013735 |
| 2021-02-04 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774921002001/0001437749-21-002001-index.htm) Shelf takedown | 333-235686 | 0001437749-21-002001 |
| 2021-02-02 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774921001760/0001437749-21-001760-index.htm) Shelf takedown | 333-235686 | 0001437749-21-001760 |
| 2021-02-02 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774921001750/0001437749-21-001750-index.htm) Shelf takedown | 333-235686 | 0001437749-21-001750 |
| 2021-02-02 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774921001749/0001437749-21-001749-index.htm) Shelf takedown | 333-235686 | 0001437749-21-001749 |
| 2020-11-12 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000143774920023649/0001437749-20-023649-index.htm) Shelf takedown | 333-235686 | 0001437749-20-023649 |
| 2020-07-17 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000110465920084557/0001104659-20-084557-index.htm) Shelf takedown | 333-235686 | 0001104659-20-084557 |
| 2020-04-09 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999520000717/9999999995-20-000717-index.htm) Declared effective | 333-235686 | 9999999995-20-000717 |
| 2020-02-06 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000110465920012016/0001104659-20-012016-index.htm) Shelf takedown | 333-219434 | 0001104659-20-012016 |
| 2020-02-06 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000110465920011647/0001104659-20-011647-index.htm) Shelf takedown | 333-219434 | 0001104659-20-011647 |
| 2020-01-21 | [RW](https://www.sec.gov/Archives/edgar/data/1659617/000165961720000016/0001659617-20-000016-index.htm) Withdrawn | 333-235965 | 0001659617-20-000016 |
| 2020-01-17 | [S-3](https://www.sec.gov/Archives/edgar/data/1659617/000165961720000011/0001659617-20-000011-index.htm) Shelf registered | 333-235965 | 0001659617-20-000011 |
| 2019-12-23 | [S-3](https://www.sec.gov/Archives/edgar/data/1659617/000165961719000202/0001659617-19-000202-index.htm) Shelf registered | 333-235686 | 0001659617-19-000202 |
| 2019-07-24 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000114420419035669/0001144204-19-035669-index.htm) Shelf takedown | 333-219434 | 0001144204-19-035669 |
| 2019-04-24 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000114420419020802/0001144204-19-020802-index.htm) Shelf takedown | 333-219434 | 0001144204-19-020802 |
| 2019-03-29 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000114420419016728/0001144204-19-016728-index.htm) Shelf takedown | 333-219434 | 0001144204-19-016728 |
| 2019-03-26 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000114420419016030/0001144204-19-016030-index.htm) Shelf takedown | 333-219434 | 0001144204-19-016030 |
| 2018-10-26 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999518002729/9999999995-18-002729-index.htm) Declared effective | 333-227845 | 9999999995-18-002729 |
| 2018-10-25 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000114420418055201/0001144204-18-055201-index.htm) Amendment | 333-227845 | 0001144204-18-055201 |
| 2018-10-15 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000114420418053847/0001144204-18-053847-index.htm) Registration filed | 333-227845 | 0001144204-18-053847 |
| 2018-07-23 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999518001857/9999999995-18-001857-index.htm) Declared effective | 333-226146 | 9999999995-18-001857 |
| 2018-07-12 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000165961718000084/0001659617-18-000084-index.htm) Registration filed | 333-226146 | 0001659617-18-000084 |
| 2018-06-21 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000114420418035170/0001144204-18-035170-index.htm) Shelf takedown | 333-219434 | 0001144204-18-035170 |
| 2018-05-24 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999518001334/9999999995-18-001334-index.htm) Declared effective | 333-224243 | 9999999995-18-001334 |
| 2018-05-15 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000165961718000062/0001659617-18-000062-index.htm) Amendment | 333-224243 | 0001659617-18-000062 |
| 2018-04-11 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000165961718000032/0001659617-18-000032-index.htm) Registration filed | 333-224243 | 0001659617-18-000032 |
| 2018-02-16 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000114420418009545/0001144204-18-009545-index.htm) Shelf takedown | 333-219434 | 0001144204-18-009545 |
| 2017-10-23 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999517002749/9999999995-17-002749-index.htm) Declared effective | 333-214898 | 9999999995-17-002749 |
| 2017-09-15 | [424B5](https://www.sec.gov/Archives/edgar/data/1659617/000114420417048291/0001144204-17-048291-index.htm) Shelf takedown | 333-219434 | 0001144204-17-048291 |
| 2017-08-21 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999517002171/9999999995-17-002171-index.htm) Declared effective | 333-219434 | 9999999995-17-002171 |
| 2017-07-24 | [S-3](https://www.sec.gov/Archives/edgar/data/1659617/000114420417037890/0001144204-17-037890-index.htm) Shelf registered | 333-219434 | 0001144204-17-037890 |
| 2017-02-10 | [424B4](https://www.sec.gov/Archives/edgar/data/1659617/000114420417007176/0001144204-17-007176-index.htm) Final prospectus | 333-214898 | 0001144204-17-007176 |
| 2017-02-08 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999517000325/9999999995-17-000325-index.htm) Declared effective | 333-214898 | 9999999995-17-000325 |
| 2017-02-08 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000114420417006759/0001144204-17-006759-index.htm) Amendment | 333-214898 | 0001144204-17-006759 |
| 2017-02-07 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000114420417006369/0001144204-17-006369-index.htm) Amendment | 333-214898 | 0001144204-17-006369 |
| 2017-01-18 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000114420417002551/0001144204-17-002551-index.htm) Amendment | 333-214898 | 0001144204-17-002551 |
| 2016-12-02 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000114420416137752/0001144204-16-137752-index.htm) Registration filed | 333-214898 | 0001144204-16-137752 |
| 2016-05-03 | [424B4](https://www.sec.gov/Archives/edgar/data/1659617/000114420416098651/0001144204-16-098651-index.htm) Final prospectus | 333-209323 | 0001144204-16-098651 |
| 2016-05-02 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1659617/999999999516004489/9999999995-16-004489-index.htm) Declared effective | 333-209323 | 9999999995-16-004489 |
| 2016-04-27 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000114420416096444/0001144204-16-096444-index.htm) Amendment | 333-209323 | 0001144204-16-096444 |
| 2016-04-15 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000114420416094685/0001144204-16-094685-index.htm) Amendment | 333-209323 | 0001144204-16-094685 |
| 2016-03-22 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000114420416089330/0001144204-16-089330-index.htm) Amendment | 333-209323 | 0001144204-16-089330 |
| 2016-02-16 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1659617/000114420416082839/0001144204-16-082839-index.htm) Amendment | 333-209323 | 0001144204-16-082839 |
| 2016-02-01 | [S-1](https://www.sec.gov/Archives/edgar/data/1659617/000114420416078258/0001144204-16-078258-index.htm) Registration filed | 333-209323 | 0001144204-16-078258 |
| 2015-12-04 | [DRS](https://www.sec.gov/Archives/edgar/data/1659617/000114420415069240/0001144204-15-069240-index.htm) Draft made public | 377-01226 | 0001144204-15-069240 |

[All filings of this company](https://equitycapital.markets/filings?cik=1659617) · [CSV](https://equitycapital.markets/filings.csv?cik=1659617)

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Source page: https://equitycapital.markets/company/1659617 · Data: U.S. SEC EDGAR · CC BY 4.0